application of antitrust analysis to multi-sided platform businesses. It shows that it is not possible to know whether standard … economic models, often relied on for antitrust analysis, apply to multi-sided platforms without explicitly considering the … demonstrate that a number of results for single-sided firms, which are the focus of much of the applied antitrust economics …

computationally, allows firms to invest or propose mergers according to the relative profitability of these strategies. An antitrust … authority is able to block mergers at some cost. We examine the optimal policy when the antitrust authority can commit to a … antitrust authority. We find that optimal policy can differ substantially from what would be best considering only welfare in …

Sunk costs play a central role in antitrust economics, but are often misunderstood and mismeasured. I will try to … clarify some of the conceptual and empirical issues related to sunk costs, and explain their implications for antitrust … just as relevant for antitrust analysis as the direct cost of a machine or a factory. …

In this paper we review issues relating to antitrust and competition in health care markets. The paper begins with a … brief review of antitrust legislation. We then discuss whether and how health care is different from other industries in … ways that might affect the optimality of competition. The paper then focuses on the main areas in which antitrust has been …

We study the effects of antitrust policy in industries with continual innovation. A more protective antitrust policy … and supply holding the innovation rate fixed. We apply this framework to analyze several specific antitrust policies. We …

A number of recent antitrust lawsuits have been settled with discount contracts in which the defendants agree in the …